
Animals
Monstrous mammals would break the body rules
Giant mammals and people thunder through our movies and books. But real mammals can only get so large before they can’t take the heat.
Giant mammals and people thunder through our movies and books. But real mammals can only get so large before they can’t take the heat.
Loss of 13 genes active in other bats could support the vampires’ blood-eating strategies and adaptations.
By tampering with genes involved in vision, a virus can send caterpillars on a doomed quest for sunlight.
Migration involves the movement of animals or people from one place to another.
Traps baited with compounds found in the mating pheromone of hornet queens attracted thousands of males.
Scientists used new and old tools to overturn 160-year-old ideas about this wasp. They show you can’t tell a wasp by its looks.
Millions of years before the evolution of saber-toothed cats, a newly discovered "hypercarnivore" prowled the forests of what is now San Diego.
Mosquitoes not only see colors, but also prefer certain ones, such as the hues of human skin.
Fish fossils from North Dakota suggest when the Chicxulub asteroid devastated Earth, triggering the mass extinction of dinosaurs and other species.
Birds that nest in holes face stiff competition for nest sites. Some use feathers, also found where predators have made a kill, to keep rivals away.